What tubes does the Gibson Ga30 use?

The Gibson Ga30 uses 2× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Gibson Ga30 produced?

The Gibson Ga30 was produced 1948–1960.

Gibson Ga30 preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Gibson GA-30 is one of the core mid-range models of the early GA series, produced from the late 1940s through the late 1950s. Early versions use dual 6V6 output tubes for 14 watts of warm, compressed American clean tone; later production moved to 6L6 tubes for more headroom. The GA-30's two-channel design and versatile voicing made it a popular choice among professional guitarists of the 1950s, and its natural breakup characteristics when pushed have made it a sought-after vintage amp for blues and early rock enthusiasts.

Years produced: 1948–1960
Made in: USA
Wattage: 14W
Channels: 2
Preamp tubes: 2× 12AX7
Power tubes: 2× 6V6

Tags: american, vintage, clean, crunch.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.